“One Small Step Back in Time,” by Clara Moskowitz, includes a picture of the firing room for Apollo 11's launch in 1969. I found, amid a sea of crew cuts, white shirts and dark ties, NASA engineer JoAnn Morgan seated at her console. Against the far wall, I could make out three other women. I, and undoubtedly other readers, would like to know more about the women in the control room that day—who they were and why they were there.